JPH0540470Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pendulum device used in a clock or the like.

[Prior Art] There have been many pendulum devices with various configurations, one example of which is disclosed in Japanese Utility Model Application Publication No. 1980-19280. In this case, a guide groove is formed in the horizontal direction in a pendulum support part provided on a frame for holding a timepiece mechanical body, and a cover part is provided above the guide groove. A pair of V-shaped protrusions are formed on the upper surface of the support that slides in and out of the guide groove, and a rotation center body formed at the upper end of the swinging rod is formed at both ends thereof. After placing the swing rod on the V-shaped protrusion through the V-shaped groove, the swing rod is attached by inserting the support into the guide groove.

[Problems to be Solved by the Invention] However, the conventional pendulum device described above has the drawbacks that the number of parts is large, resulting in high manufacturing costs, and the installation of the pendulum is complicated and time-consuming.

Therefore, an object of the present invention is to reduce the number of parts, make it easier to attach the swinging rod, and reduce manufacturing costs.

[Means for Solving the Problems] The feature of the present invention is that a swinging center body extending in the horizontal direction is provided at the upper end of the swinging rod, and the swinging center body is attached to a support body to which the swinging rod is attached. A support part is provided to support the swing center body and the support part, and a pair of V-shaped protrusions are provided on one side of the swing center body and the support part, and are located with a gap between them. On the other hand,
a pair of V-shaped grooves that respectively engage with both the V-shaped protrusions; and a regulating part that fits in the gap between the two protrusions and regulates the position of the swing center body in the front-rear direction. The regulating part is formed with a guide groove that is inserted through both V-shaped grooves and allows the protrusion to pass through when the swinging rod is swung beyond the normal swing angle. At least one of the swinging rod and the support body is provided with a detachment prevention portion that prevents the swinging rod from coming off upward.

[Function] When the swinging rod is tilted beyond the normal swinging angle, the V-shaped protrusion provided on one side of the swinging center body and the supporting portion moves inside the guide groove of the regulating portion provided on the other side. After making it passable and inserting the swinging center body along the guide groove, by positioning the swinging rod within the normal swinging angle, the pair of V-shapes provided at the other end Both groove portions of the groove and the protrusion are engaged with each other, and the regulating portion is loosely engaged with the gap between both the protrusion portions. Thereby, the swinging rod is swingably supported with its position in the front-rear direction being restricted. Further, upward separation is prevented by a separation preventing portion provided on at least one of the swing center body and the support body. Therefore, the swinging rod is supported so that it cannot be detached and is swingable within the normal swinging angle range.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows the back side of this pendulum device, which is the main part, and as shown in FIGS.
consists of a lower case 3 and an upper case 4. In the center of the case 2, there is provided a clock mechanism storage section 5 in which a clock drive mechanism (not shown) such as a clock train is housed.On the side of the clock mechanism storage section 5, there are
A battery storage chamber 6 is provided. Note that 2a is a screw hole for mounting. Further, below the case 2, there is provided a drive circuit storage section 7 that stores a drive circuit (not shown) for swinging the swinging rod 1, and in the center of the drive circuit storage section 7, an excitation coil ( (not shown) is provided. Note that 4a is a locking pin that locks the swinging rod 1 so that it cannot swing during transportation or the like.

A support portion 8 that swingably supports the swinging rod 1 is provided at the upper end of the timepiece mechanical body case 2. Third
As shown in the figure, the support part 8 is integrally formed with the lower case 3, and the support part 8 is connected to the upper case 3 through a U-shaped groove 4b (see FIG. 2) formed at the upper end of the upper case 4. A protruding portion 8a is formed by protruding rearwardly. The upper surface of the support part 8 has a V
Letter-shaped protrusions 9 and 10 are provided.

As shown in FIG. 1 and FIGS. 4 to 6, a frame 11 having an opening 11a is integrally formed at the upper end of the swinging rod 1. frame 1
1 is provided with a swing center body 12 extending horizontally through an opening 11a. Swing center body 12
V-shaped grooves 13 and 14 that engage with the protrusions 9 and 10, respectively, and a regulating portion 15 that fits into the gap d between the protrusions 9 and 10 are provided at both ends of the V-shaped grooves 13 and 14, respectively. The regulating portion 15 is inserted into the grooves 13 and 14 so that when the swinging rod 1 is swung beyond the normal swing angle A in the direction of the arrow shown in FIGS. A guide groove 16 that can be inserted is provided. The swinging rod 1 also includes a magnet holding section 1 that holds a permanent magnet (not shown) at a position facing the excitation coil storage section 7a.
7 is provided above the magnet holding portion 17 to engage with the locking pin 4a when the swinging rod 1 is swung beyond the normal swing angle A in the direction opposite to the arrow shown in FIG. A locking pawl 18 that locks the swinging rod 1 so that it cannot swing.
is provided. Note that 19 is a connecting portion that connects a pendulum (not shown) to the swing rod 1.

Therefore, in order to attach the swinging rod 1 to the case 2, first, as shown in FIG. While keeping the V-shaped protrusions 9, 10 provided on the upper surface of the support part in a state where they can pass through the guide groove 16 formed in the regulating part 15 of the swing center body 12, insert the protrusions 9, 10. The swinging center body 12 is inserted from the back side of the case 2 toward the front side so that it swings within the guide groove 16. Thereafter, by positioning the swing rod 1 within the range of the normal swing angle A as shown in FIG. 6B, the swing rod 1 is placed at both ends of the swing center body 12 as shown in FIG. A certain V-shaped groove 1
3 and 14 are respectively engaged with V-shaped protrusions 9 and 10 provided on the upper surface of the support body 8, and the regulating part 15 is loosely engaged with the gap d between the protrusions 9 and 10, so that the swinging rod 1 is swingably supported with its position in the front-rear direction restricted. In addition, in this state, the protruding part 8a of the support part 8 is located within the opening 11a of the frame 11, and when a force is applied to the swinging rod 1 to cause it to detach upward, the lower surface of the protruding part 8a is placed inside the frame 11. It functions as a detachment prevention means that comes into contact with the inner edge of the swing rod 1 and prevents the swing rod 1 from detaching upward. For this reason, the swinging rod 1 is supported by the support portion 8 in a non-removable and swingable manner within the range of the normal swing angle A. Also, when transporting this pendulum device,
Engage the locking claw 8 with the locking pin 4a and swing the swinging rod 1.
If the swinging rod 1 is kept in a non-swingable state, the swinging rod 1 is fixed to the watch mechanism case 2 in a non-removable manner, so that there is no problem in transporting the swinging rod 1.

In this embodiment, the protrusions 9 and 10 are provided on the support part 8, and the grooves 13 and 14 and the regulating part 15 are provided on the swing center body 12. Provided in the swinging center body 12, the groove portions 13,1
4 and the regulating section 15 may be provided on the supporting section 8. In addition, by the protrusion 8a protruding rearward of the case 2 and the frame 11 formed at the upper end of the swinging rod 1,
This constitutes a detachment prevention means for preventing the swinging rod 1 from coming off upwards, and a cover portion or the like facing the upper surface of the swinging center body 12 is provided at the upper end of the support portion 8 to constitute the detachment prevention means. Good too.

[Effects of the invention] As explained in detail above, the invention has very excellent effects, such as reducing the number of parts, reducing manufacturing costs, and making it extremely easy to install the swinging rod. .

[Brief explanation of drawings]

The drawings relate to one embodiment of the present invention,
Figure 1 is a partial cross-sectional rear view of the watch mechanism, Figure 2 is a partial cross-sectional rear view of the watch mechanical case, Figure 3 is a cross-sectional view of the support section, Figure 4 is a partial cross-sectional front view of the swing rod, and Figure 4 is a partial cross-sectional front view of the swing rod. FIG. 5 is a sectional view taken along the line V-V in FIG. 4, and FIG. 6 is an enlarged view of the main parts showing how to attach the swinging rod. DESCRIPTION OF SYMBOLS 1... Swing rod, 2... Support body (watch mechanical body case), 8... Support part, 8a... Separation prevention means (protrusion), 9, 10... Protrusion, 11... Separation prevention means ( frame), 12... Swinging center body, 13, 1
4...Groove portion, 15...Regulating portion, 16...Guide groove, A...Normal swing angle, d...Gap.

Claims (1)

[Scope of Claim for Utility Model Registration] A swinging rod is provided with a swinging center body extending in the horizontal direction at the upper end thereof, and a support member to which the swinging rod is attached is provided with a support portion for supporting the swinging center body. A pair of V-shaped protrusions are provided on one side of the swing center body and the support portion, and a pair of V-shaped protrusions are provided with a gap between them, and the other side of the swing center body and the support portion are provided with a pair of V-shaped protrusions spaced apart from each other. a pair of V-shaped grooves that respectively engage with both of the protrusions, and a regulating part that engages in the gap between the two protrusions and regulates the position of the swing center body in the front-rear direction. The regulating portion is provided with a guide groove that is inserted into both of the V-shaped grooves and allows the protrusion to pass through when the swinging rod is swung beyond the normal swing angle. A pendulum device, characterized in that at least one of the swinging rod and the support body is provided with a detachment prevention means for preventing the swinging rod from coming off upward.